Compare AI models
| Specifications | ||
ParametersThe learned values that shape how a model responds. B means billion and T means trillion. For mixture-of-experts models, the total count is larger than the number active for each token. Parameter count alone does not measure quality. | 12B | — |
Context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider. | 128k | 400k |
| API pricingUSD per 1M tokens · lower wins | ||
Cheapest inputLowest input rate across every provider on OpenRouter, the lab included. The cheapest endpoint may run a quantised build or a shorter context — see "Available from" on the model page. | $0.0166Io Net | — |
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input. | $0.0216Io Net | — |
| $4.40Io Net · fp16 | — | |
| Overview | ||
| Company | Mistral | OpenAI |
| Release date | Jul 18 2024 | Nov 13 2025 |
| Access | Open Weight | Closed |
| Model details | View model | View model |
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Mistral NeMo and GPT-5.1-Codex-Mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral NeMo shipped 483 days before GPT-5.1-Codex-Mini, so benchmark comparisons should account for the intervening progress.
Context windows are 128k (Mistral NeMo) vs 400k (GPT-5.1-Codex-Mini). Mistral NeMo is open weight, while GPT-5.1-Codex-Mini is closed.
Direct benchmark comparisons are unavailable — Mistral NeMo and GPT-5.1-Codex-Mini don't publish scores on any of the same benchmarks.